Marshall Schor created UIMA-4156:
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Summary: uima-as running a pear scaled out fails with strange
error messages
Key: UIMA-4156
URL: https://issues.apache.org/jira/browse/UIMA-4156
Project: UIMA
Issue Type: Bug
Components: Async Scaleout
Affects Versions: 2.6.0AS
Reporter: Marshall Schor
Assignee: Jerry Cwiklik
Deploying a Pear as a service, and scaling it out, causes a not-assignable kind
of error between a class and an interface, when attempting to initialize the
pear for the 2nd scaled-out-instance. Traced this to a conceptual bug: UIMA-AS
was passing the same == UimaContext object to the produceAnalysisEngine (in the
additionalParams). This object is updated and must be unique per component per
scaled-out-instance. Other things in the UimaContext (such as the CAS pool)
are needed to be on a per scaled-out-instance, as well. This same issue in the
core MultiprocessingAnalysisEngine impl was addressed in UIMA-2078 (see
comments)
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